A rare case of essential thrombocythemia with pseudo-hyperkalemia.

Essential thrombocythemia (ET) is a rare clonal stem cell disorder that affects the production of platelets in the bone marrow. This condition causes an overproduction of platelets, which can lead to blood clots and other complications. Potassium, on the other hand, is an essential mineral that plays a vital role in various bodily functions, including nerve impulses and muscle contractions. Here, in this case report, we investigated a case of pseudo-hyperkalemia caused by essential thrombocythemia in a 77-year-old woman with very high platelet counts. Moreover, this case report, which has no similar examples in the literature review, is important for clinicians.

Comparing Colored and White-Black Visual Evoked Potentials in Multiple Sclerosis Patients.

INTRODUCTION: We compared white-black (WB), white-red (WR), and black-red (BR) checkerboard stimulated visual evoked potentials (VEPs) in multiple sclerosis (MS) patients and aimed to evaluate if redcolored VEP is more sensitive than WB VEP for the diagnosis of optic neuritis (ON). METHODS: Twenty-nine MS patients (21 females [72.4%]) and 35 healthy control subjects (24 females [68.6%]) were included in the study. Neurological and ophthalmological examinations were conducted for all subjects and VEP and optical coherence tomography (OCT) investigations were performed. RESULTS: A significant difference was found between MS patients and the control group for WB, WR, BR stimulated VEP P100 latencies and retinal nerve fiber length (RNFL) and ganglion cell complex (GCC) thicknesses, but there was no difference for WB, WR, and rb stimulated VEP amplitude values between the groups. There was no significant pathological difference between the eyes with an ON history in MS and eyes without an ON history in MS and control subjects after WB, WR, and BR stimulation (p=). CONCLUSIONS: The WB checkerboard stimulated VEP is an ample test for routine use; further studies are necessary regarding the utility of rb stimulated VEP in detecting subclinical ON.